94 



The general color varies from greenish to fawn, freshly moulted 

 specimens being bright green. In a mature specimen the fawn color 

 is plainly mottled with black and white. There is a delicate 

 obscure dorsal line of white, more or less evidently bordered by a 

 darker shade, deepest upon the incisions, producing an appearance 

 of obscure black points. From these points oblique lines pass for- 

 ward and outward across the dorsal space to the subdorsal line, 

 these lines being paler than the ground color and bordered anteriorly 

 with black. These black dashes become more conspicuous on the 

 posterior segments than the accompanying pale lines, and are there 

 converted into obhque triangular blotches. In some examples these 

 blotches are evident the whole length of the body. 



The subdorsal space is more densely varied with black than the 

 dorsal, giving the sides a darker tint, but the ground color is the 

 same. The lower part of the subdorsal space is more distinctly 

 gray than the upper. A narrowish w^hite stigmatal line margins 

 the sub-stigmatic space above ; this latter being a reddish drab, 

 variegated with whitish. 



The venter and prolegs are slightly paler and reddish. The 

 head is reddish brown, with two pale brown longitudinal lines. The 

 stigmata are white, ringed with black. The cervical shield is in- 

 conspicuous and colored like the body. The piliferous tubercles are 

 small, and the hairs short. In some specimens the lower border of 

 the subdorsal space is marked by a row of longitudinal black 

 dashes. The subdorsal space itself is decidedly darker, and the 

 sub-stigmatic space is a yellowish tint. 



The pupa is seven-eighths inch long by two-eighths inch in great- 

 est diameter, reddish brown, foie part opaque, segments of abdo- 

 men roughened at articulations, otherwise smooth and shining. 

 Abdomen terminating in two slender spines, with two minute spi- 

 nules at their bases, one on each side. 



LIFE HISTORY. 



Our data indicate at least two broods of the species, and there is 

 possibly a later one also. The larvae have appeared in our collec- 

 tions from April 24 to May 6, and again in the middle of July. 

 Those taken in April pupated from the 26th of that month to the 

 6th May, the images emerging from the 10th May to the -1st, 

 a single belated specimen appearing on the 11th June. Speci- 

 mens pupating on the 26th emerged five days later. Larvae taken 

 from cabbage on the 16th July entered the ground on the 25th, 

 and emerged from the 15th to the 19th August. As the larvae 

 obtained in April were adult, the species evidently hibernates in the 

 larval stage. From the specimens in our breeding cages emerged 

 two hymenopterous parasites of the sub-family Cryptides, but which 

 I have not further determined. 



